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<?php $a = new ArrayIterator(array()); array_key_exists($a, get_defined_vars()); array(&$$a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bmR3h
function name:  (null)
number of ops:  12
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $1      'ArrayIterator'
          1        SEND_VAL_EX                                              <array>
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
    3     4        INIT_FCALL                                               'get_defined_vars'
          5        DO_ICALL                                         $4      
          6        ARRAY_KEY_EXISTS                                 ~5      !0, $4
          7        FREE                                                     ~5
    4     8        FETCH_W                      local               $6      !0
          9        INIT_ARRAY                                       ~7      $6
         10        FREE                                                     ~7
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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